Output the nth prime number, where the 1st prime is 2, the 2nd is 3, the 3rd is 5, and so on.
One line: a positive integer n.
One line: the nth prime number.
Example 1
Input
1
Expected
2
Explanation
The first prime is 2.
Example 2
Input
5
Expected
11
Explanation
The primes 2,3,5,7,11 make 11 the 5th prime.
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